Computer-Aided Design

• Involute Spur Gear

The creation of the involute spur gear involved defining parameters to provide additional information and then using relations to edit constraint equations. Moreover, commands such as curve from equation, project, delete segment, extrude as surface, round, datum plane, group, mirror, merge, geometry pattern, solidify and chamfer were used.

• Cam

The creation of the cam required the use of the graph feature. Dimensions were written in notepad and then imported to Creo. Moreover, commands such as datum graph, spline, modify, import, sweep, relations, text and chamfer were used.

• Pump Housing

For the creation of the pump housing, commands such as curve from equation, sweep as surface, merge, thicken, revolve, hole, pattern, and rounds were used.

• Bottle

Initially, an .ibl file was created on notepad for representing curves as a series of points. Next, that .ibl file was imported and commands such as mirror, variable sweep, round, shell, helical sweep, revolve and project were used.

• Base Support

This part utilizes commands such as revolve, round, extrusion, offset, cut, mirror, and hole.

• Hammer Handle

The creation of the hammer handle part included the use of revolve, chamfer, helical sweep and pattern.

• Business Card Holder

The creation of this part included the use of the revolve, mirror, swept blend, datum points, rounds, shell, and variable radius rounds commands.

• Helical Extension Spring

For the creation of the helical extension spring, commands such as helical sweep, variable pitch, pitch points, revolve, project and sweep were used.

• Razor Handle

For the creation of the razor handle, commands such as spline, datum point, swept blend, round, offset, project, offset, text, and expand feature were used.

• Basketball Rim

Firstly, I used the notepad to type in data points that were associated with the lower branch of the rim. Next, I saved it as a .pts file to be imported into Creo. Moreover, commands such as sweep, import, curve through points, hole, pattern and round were used.

• Brake Rotor

The creation of the Brake Rotor focused on the utilization of the User Defined Feature and the Family Table, giving one the capability of reproducing several brake rotors with different dimensions.

• Bicycle Chain Assembly

The creation of the various bicycle chains consisted of making an assembly with individual part files and modifying the shape to whatever is desired.

The lower bicycle chain consists of:

Chain: No. 40, 1/2-in pitch, four-strand, 116 pitches

Sprockets: No. 40-4 (four-strands), 1/2-in pitch

Small: 22 teeth, Diameter = 3.513 in

Large: 84 teeth, Diameter = 13.372 in

Maximum center distance: 14.94 in

• Pinion Gear Shaft Drawing

This project dealt with geometric dimensioning and tolerancing of a pinion gear shaft.

• Control Bracket Drawing

Along with geometric dimensioning and tolerancing, the control bracket drawing also deals with auxiliary views for better visualization and understanding of the part.

• Roller Chain Drawing

This project dealt with the geometric dimensioning and tolerancing of individual parts as well as different assemblies. Moreover, a bill of materials with the inclusion of balloons are also included in the drawings.

• Slider Crank Mechanism

This project dealt with verifying analytical kinematic results of a four bar linkage on CREO. The graphs show for a specific point on the piston, the corresponding position, velocity and acceleration versus time.

• Valve Cam Mechanism

For the Valve Cam Mechanism project, the interest was to follow a single point on the valve and analyze it's position, velocity and acceleration versus time. Furthermore, understanding the loading of the servo and the spring versus time was also of interest. The graphs depict these relationships.

• Camshaft

The camshaft project deals with the sensitivity and optimization of a camshaft design. In the first figure, the center of gravity is not coincident with the axis of revolution which creates an unwanted moment arm. The optimized camshaft has less material and the center of gravity is within the axis of revolution, resulting in a more desirable camshaft.

• Car Wheel

The car wheel project deals with creating multiple components and then creating an assembly. The car tire is drawn by offsetting a plane, then creating a drawing that resembles the tread, afterwards the split line command has to be used to project the tread onto the surface of the tire.

• Predator Drone

The drone predator project focuses on using points that were measured from the drone and using them to replicate the body. The wings were created using airfoil data from the University Illinois Urbana-Champaign.

• Idler Arm

For the creation of the idler arm, commands such as sketch, extruded boss/base, smart dimension, plane, simple hole, hole wizard, fillet, and cosmetic thread were used.

• Shaft Hanger

The shaft hanger part was created using drawings on multiple planes and then combining all of the drawings into a surface by using the Lofted Boss/Base command.

• Support Bracket

The support bracket part was created using the sheet metal option.

• 5 inch Housing Cover

Along with geometric dimensioning and tolerancing, the housing cover drawing also deals with auxiliary views for better visualization and understanding of the part.

• Landing Gear

The landing gear project was first assembled from individual parts and then a drawing was done with balloons and bill of materials.

• Split Cotter Pin

The split cotter pin project focuses on creating a design table with multiple sizes of split cotter pins, giving one the convenience of choosing which size suits best without the hassle of redrawing.